Youmile 5 pcs 18650 Lithium Li-ion Battery Charger Board 3.7V 4.2V to 5V/9V 1A DC-DC Step Up Boost Module Adjustable charge and discharge + 5 pcs 18650 battery box
Product ID: 543396952
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⚡Adjustable 3.7V–5V/9V output boost
🔄Simultaneous charge & discharge at 1A
🔋5x 18650 Li-ion batteries included
Frequently Bought Together
Description
🔋 Boost Your Power Game with Smart, Portable Energy!
- SMART LED INDICATORS - Stay informed with intuitive red/blue LEDs showing charging and standby status at a glance.
- DUAL INPUT CONVENIENCE - Supports USB Type-C or solder joint input for flexible charging options.
- CUSTOMIZABLE VOLTAGE OUTPUT - Easily switch between 5V and 9V outputs to match your device needs with precision.
- SAFE PARALLEL BATTERY SETUP - Designed for parallel connection only, ensuring stable and reliable power delivery.
- POWER YOUR PROJECTS ANYWHERE - Compact 5-pack 18650 batteries with a versatile boost module for on-the-go energy.
This 5-piece 18650 Lithium-ion battery kit includes a DC-DC step-up boost module capable of adjustable 3.7V to 5V/9V output at 1A, supporting simultaneous charging and discharging. Featuring dual input options (Type-C and solder joint), smart LED charge indicators, and a battery box, it’s ideal for DIY electronics, mobile power supplies, and portable device charging.
Specifications
| Manufacturer | Youmile |
| Part number | JK-YM-648 |
| Item Weight | 50 g |
| Package Dimensions | 16.5 x 8.7 x 2.5 cm; 50 g |
| Item model number | JK-YM-648 |
| Batteries included? | No |
| Batteries Required? | No |
Reviews
D**.
So far everything works (not true of some of the Youmile stuff).
Voltage adjustment work and the charging is also OK.
Common Questions
Trustpilot
TrustScore 4.5 | 7,300+ reviews
The MOLLE sheath is of exceptional quality. Very happy with my purchase.
2 weeks ago
Fantastic and great service. Shipping was faster than expected.
1 week ago
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